Skip to Content

Convert Java String to Integer object Example

  1. /*
  2.   Convert String to Integer example
  3.   This example shows how we can convert String object to Integer object.
  4. */
  5.  
  6. public class StringToIntegerExample {
  7.  
  8.   public static void main(String[] args) {
  9.    
  10.     //We can convert String to Integer using following ways.
  11.     //1. Construct Integer using constructor.
  12.     Integer intObj1 = new Integer("100");
  13.     System.out.println(intObj1);
  14.    
  15.     //2. Use valueOf method of Integer class. This method is static.
  16.     String str = "100";
  17.     Integer intObj2 = Integer.valueOf(str);
  18.     System.out.println(intObj2);
  19.    
  20.     //Please note that both method can throw a NumberFormatException if
  21.     //string can not be parsed.
  22.    
  23.   }
  24. }
  25.  
  26. /*
  27. Output of the program would be :
  28. 100
  29. 100
  30. */